public void TestExecuteOnHandler()
{
SimpleCommand cmd = new SimpleCommand {
TestString = "Did it work?"
};
ICommandHandler <SimpleCommand> handler = Substitute.For <ICommandHandler <SimpleCommand> >();
ICommandDispatcher dispatcher = Substitute.For <CommandDispatcherBase>(new Object[] { null });
ConfiguredCall call = dispatcher.Protected("GetCommandHandler", typeof(SimpleCommand)).ReturnsForAnyArgs(handler, null);
dispatcher.Dispatch <SimpleCommand>(cmd);
handler.Received(1).Execute(cmd);
}